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CT & MRI – What is Expected from the Radiological Technologists Dr. Harsha Dissanayake MBBS, M.Phil, MD(Radiology) Dip. Neurovascular Diseases (France)

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Presentation on theme: "CT & MRI – What is Expected from the Radiological Technologists Dr. Harsha Dissanayake MBBS, M.Phil, MD(Radiology) Dip. Neurovascular Diseases (France)"— Presentation transcript:

1 CT & MRI – What is Expected from the Radiological Technologists Dr. Harsha Dissanayake MBBS, M.Phil, MD(Radiology) Dip. Neurovascular Diseases (France) Consultant Radiologist & Senior Lecturer Faculty of Medical Sciences University of Sri Jayewardenepura

2 Radiographer Radiological Technologist Medical Imaging Technologist

3 Who is a Radiological Technologist? a trained health care professional who performs medical imaging by producing high quality images which is useful to diagnose and treat injury or disease. patient’s diagnosis and treatment is often dependent on the images produced. He is an important member of the Health care team.

4 Health Care Professional undertakes a specialized set of tasks enjoys considerable work autonomy engaged in creative and intellectually challenging work Patients place a great deal of trust in them strict codes of conduct Ethical and moral obligations

5 What should be the goal – when encountered with a patient To generate the best possible, Highest quality, Appropriate images – which will be used to arrive at the diagnosis / or to treat.

6 How to achieve this goal ? Asses the patient’s problem – get the information Analyze Set the goal clear Formulate a plan to achieve the goal Workout the plan performing the tasks Self evaluate your images – “Is this the best possible images that I can generate?”

7 Quality control of the procedure Inferior quality images / study – Area of interest inadequately covered / all sequences not included ……….etc May lead to – Inaccurate interpretation / wrong diagnosis – Repeated exposure – Radiation hazards to the patient / self / staff – Additional cost – Additional time

8 Competency ? expertise and knowledge of patient handling physics, anatomy, physiology and radiology to assess patients physicsanatomyphysiologyradiology develop optimal radiologic techniques to plan and evaluate – resulting radiographic images. Should be able to spot “what is not normal” – pathology pathology Radiation Protection Quality Control

9 How the competency is gained? High school Diploma – Certificate course University Degree BSc in Diagnostic Radiography/Diagnostic Imaging – 3yrs Can specialize in-house or through a university course as a postgraduate in CT, MRI, Nuclear Medicine ….. with opportunities to gain an MSc in their field.

10 CT & MRI – What is Expected from the Radiological Technologists Before / During / After the procedure Check the identity and the requested investigation Check the consent explaining the procedure ensure that the patent has had the correct preparation Keep the emergency tray ready

11 clothing, ensure that there are no metal objects that may interfere Check the clinical details – if inadequate make a note of the patents problem & relevant details. Get previous imaging Ix reports/films If the requested investigation is not clear / inappropriate, always discuss with the referring clinician Check the patients data sheet / questionnaire – whether it is appropriately filled Are there any contraindications / Allergies?

12 During the scanning Radiation dose All medical radiation exposures must be justified and the radiation levels optimized ALA RAALARA Radiation to the patient (in diagnostic studies), staff and the general public are to be kept As Low As Reasonably Achievable (the ALARA principle)

13 Protocols Protocols are mere guidelines. Has to modify according to the individual patients problem – when ever necessary Timing of the procedure Whether to give contrast or not Timing of the contrast injection Arterial / venous / late phases Oral /rectal contrast MRI – additional sequences - ? Haemorrage / Calcification / stroke ……..

14 Example 1 60yrs Male Haematuria Ix. – CT KUB

15 CT KUB – Normal / no calculi

16 Are you happy?

17 Late finding

18 48 yrs / liver lesion in USS Ix. - Triple phase CT ArterialPortal venous

19 Ix. - Triple phase CT ArterialPortal venous

20 Ix. - Triple phase CT ArterialPortal venous

21


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